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公开(公告)号：US11492273B2
公开(公告)日：2022-11-08
申请号：US17087119
申请日：2020-11-02
申请人： Ovivo Inc.
发明人： Trevor Robert Auman
IPC分类号： C02F1/44
摘要： Silicon carbide flat sheet filtration membranes are supported on one piece manifold/end cap structures. Ends of a large number of the parallel flat plate membranes are fitted into elongated end cap slots that are part of a single molded manifold/end cap structure, such a structure being at each end of the series of membranes. In addition, a one piece external frame module can be provided to receive the gang of flat plate membranes with attached manifold/end caps. In the event of a damaged plate, the plate can be removed and replaced along with a special end cap repair section. This provides advantages over prior arrangements with individual end caps for each module or potting of the flat plates into a box or chamber.
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公开(公告)号：US11365141B2
公开(公告)日：2022-06-21
申请号：US16824469
申请日：2020-03-19
申请人： Ovivo Inc.
发明人： Calvin Robertson
摘要： An aeration balance controller in a wastewater treatment process allows for precise control of aeration medium in situations where the oxygen concentration must be controlled in more than one aeration zone or compartment, with reduced instrumentation. The system also has application controlling aeration media where the aeration of one or more zones may interfere with the stable control of aeration in another zone. This is accomplished by the use of two control schemes: one which determines the overall aeration effort required, and one or more controllers which adjust the balance between zones to equalize the process error from setpoint from zone to zone.
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公开(公告)号：US11286189B2
公开(公告)日：2022-03-29
申请号：US16770901
申请日：2018-11-30
申请人： Ovivo Inc.
发明人： Philippe Rychen , Markus Duppel
IPC分类号： C02F9/00 , B01D61/14 , B01D61/16 , B01D71/02 , C04B35/56 , C02F1/44 , C02F1/52 , C02F1/66 , B01J19/00 , C01B7/19 , C04B35/565 , C02F1/00 , C02F101/10 , C02F101/14 , C02F103/34
摘要： The invention relates to a method for treating fluoride-containing, in particular HF containing wastewater to remove fluoride and to a corresponding apparatus. In the new method calcium carbonate is reacted in a reaction step at an acidic pH≤4 with the fluoride in the wastewater to form calcium fluoride particles. Then, in a subsequent filtration step said calcium fluoride particles are separated by a porous membrane from the treated wastewater. The inventive apparatus comprises at least one reaction container/tank for reacting calcium carbonate at an acidic pH≤4 with fluoride in the wastewater to form calcium fluoride particles, as well as at least one porous membrane, in particular at least one porous ceramic membrane for separating calcium fluoride particles from the treated wastewater in a filtration step.
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公开(公告)号：US11221043B2
公开(公告)日：2022-01-11
申请号：US16939630
申请日：2020-07-27
申请人： OVIVO INC.
摘要： A split stabilizer bearing for a mast of a rotary distributor includes a split cylindrical housing, a split filament wound bushing, a plurality of polytetrafluoroethylene-coated carbon fiber ring seals, an annular split seal retainer, and multiple fasteners. The filament wound bushing is disposed inside the housing, along an inner surface thereof. The bushing has a backing layer of high-strength glass fiber and an inner sliding layer of polytetrafluoroethylene (PTFE) and polymer fiber, the two layers both embedded in a epoxy resin matrix. The carbon fiber ring seals are disposed on axially or longitudinally opposed sides of the bushing and along an inner side or surface of the cylindrical housing, preferably in respective annular recesses or offsets along the inner side or surface of the housing. The fasteners, nylon-patch locking screws or bolts, couple the bushing and the split seal retainer to the housing.
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公开(公告)号：US11220444B2
公开(公告)日：2022-01-11
申请号：US17000931
申请日：2020-08-24
申请人： OVIVO INC.
摘要： A thickener/clarifier system includes a thickener/clarifier and one or more sensors measuring respective process or operating parameters of the thickener/clarifier(s) during operation thereof. The sensors are operatively coupled via hard-wired connections and possibly via 4-20 mA converters to one or more wireless transmitters. At least one wireless receiver receives the wireless signal(s) from the transmitter(s). At least one display is hard-wire coupled to the receiver(s) for displaying a magnitude of each process or operating parameter measured.
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公开(公告)号：US20210252435A1
公开(公告)日：2021-08-19
申请号：US17175451
申请日：2021-02-12
申请人： Ovivo Inc.
发明人： Dustin Voorhees
摘要： In a wastewater treatment plant a rag seeding tank is included in a process drain to collect hair and fibers which have passed through headworks of the plant. The hair and fibers tend to join together into large masses downstream of the headworks and can be damaging to process zones, particularly membrane zones. The rag seeding tank includes cartridges filled with surfaces that fibers and hair will attach to, so that hair/fiber rags grow in the seeding tank and are removed therefrom rather than causing problems downstream.
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公开(公告)号：US20210061685A1
公开(公告)日：2021-03-04
申请号：US17000931
申请日：2020-08-24
申请人： OVIVO INC.
摘要： A thickener/clarifier system includes a thickener/clarifier and one or more sensors measuring respective process or operating parameters of the thickener/clarifier(s) during operation thereof. The sensors are operatively coupled via hard-wired connections and possibly via 4-20 mA converters to one or more wireless transmitters. At least one wireless receiver receives the wireless signal(s) from the transmitter(s). At least one display is hard-wire coupled to the receiver(s) for displaying a magnitude of each process or operating parameter measured.
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公开(公告)号：US20210033146A1
公开(公告)日：2021-02-04
申请号：US16939630
申请日：2020-07-27
申请人： OVIVO INC.
摘要： A split stabilizer bearing for a mast of a rotary distributor includes a split cylindrical housing, a split filament wound bushing, a plurality of polytetrafluoroethylene-coated carbon fiber ring seals, an annular split seal retainer, and multiple fasteners. The filament wound bushing is disposed inside the housing, along an inner surface thereof. The bushing has a backing layer of high-strength glass fiber and an inner sliding layer of polytetrafluoroethylene (PTFE) and polymer fiber, the two layers both embedded in a epoxy resin matrix. The carbon fiber ring seals are disposed on axially or longitudinally opposed sides of the bushing and along an inner side or surface of the cylindrical housing, preferably in respective annular recesses or offsets along the inner side or surface of the housing. The fasteners, nylon-patch locking screws or bolts, couple the bushing and the split seal retainer to the housing.
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公开(公告)号：US12055961B2
公开(公告)日：2024-08-06
申请号：US17454460
申请日：2021-11-10
申请人： Ovivo Inc.
发明人： Tyson Beaman , Garret Beaman , John Vorwaller
IPC分类号： G05D9/02
CPC分类号： G05D9/02
摘要： A liquid level control system employs a flap gate for discharging liquid, but with a midstream headloss inducing device between the basin or tank and the flap gate. The flap gate opens when liquid level in the basin rises, and the opening of the gate is controlled by a counterweight positioned so as to decrease closing force as the gate opens farther, thus managing the outflow of liquid to efficiently return the basin to a design level. If flow from the basin is generally constant, the system will reach a point of equilibrium of gate opening and closing forces while liquid flows out from the basin.
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10.发明授权公开(公告)号：US11912592B2
公开(公告)日：2024-02-27
申请号：US17445548
申请日：2021-08-20
申请人： Ovivo Inc.
发明人： Hiren Trivedi , John Vorwaller , Tyson Beaman , Sophia Baker , Sergio Pino-Jelcic , David Stensel
CPC分类号： C02F1/52 , C02F3/02 , C02F2001/007 , C02F2301/046
摘要： A continuous flow granular/flocculent sludge wastewater process selects for granule biomass capable of nitrogen and phosphorus removal and controls granule size and concentration of granular and flocculent sludge for optimal nutrient, organic, and solids removal in a smaller footprint. A series of biological process zones lead to a secondary clarifier. Mixed liquor sludge, preferably from an aerobic zone, goes through a classifier or separator processing flow from the aerobic zone, to the secondary clarifier. In a sidestream process that can be included a portion of sludge preferably from an aerobic zone goes through a classifier or separator to selectively produce a granular-rich effluent, and the clarifier may also have a separator to further concentrate granular biomass, most of which is cycled back to an initial multi-stage anaerobic process zone. The anaerobic zone is structured and operated to encourage growth of granules in subsequent process zones.
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